Q. The privilege level at which the real mode programs are executed is

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Q. The instructions to prepare the processor for protected mode can only be executed at the privilege level

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Q. The instruction that is unable to set or read the VM (Virtual Mode) bit is

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Q. If the CKM pin of 80387 is high, then 80387 is operated in

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Q. The unit that handles the data and directs it to either FIFO or instruction decoder depending on the bus control logic directive is

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Q. The unit that is responsible for carrying out all the floating point calculations, allotted to the coprocessor by 80386, is

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Q. The sizes of instruction and data pointer registers of 80387 respectively are

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Q. To inform 80387 that the CPU wants to communicate with NPS1, the NPS1 line is directly connected to

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Q. Which of the following is not a newly added instruction of 80386, that are not present in 80286?

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Q. The BSF (bit scan forward) instruction scans the operand in the order

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Q. The BSR (bit scan reverse) instruction scans the operand in the order

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Q. If a ‘1’ is encountered when an operand is scanned by BSF, then

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Q. If a ‘1’ is not encountered when an operand is scanned by BSR, then

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Q. Which of the following is not a bit test instruction?

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Q. In case of BT instruction, if the bit position in the destination operand specified by the source operand, is ‘1’, then

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Q. Which of the following is not a conditional set byte instruction?

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Q. The instruction that shifts the specified number of bits in the instruction, from the upper side of the source operand into the lower side of the destination operand is

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Q. The instruction that shifts 8 LSB bits of ECX into the MSB positions of EAX, one by one starting from LSB of ECX is

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Q. The first processor with an inbuilt floating point unit is

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Q. Which of the following signal is handled by bus control and request sequencer?

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